Artisan Power Polycom SpectraLink PTS360 & Avaya 70245509 Extended Capacity Replacement Battery. Polycom/Spectralink PTS360, PTB400, PTB410, PTB810 and SKPT400; Avaya 3406, 3410, 3420 and 3606 Extended Capacity Replacement Battery. Fully replaces battery number PTS360 and 70245509. NiMH Rechargeable Battery Pack| 4.8 Volt | 1000 mAh | Cells Made by Yuasa Long Lasting High Capacity: 1000 mAh capacity rating 37% higher than the OEM battery. Manufactured by Artisan Power, a leader in premium quality replacement battery packs.